A team of international scientists—including researchers at the University of St. Andrews, Syracuse University and Royal Holloway, University of London—have demonstrated a new source of food for early life on the planet.
Earth Sciences
May 21, 2019
1
252
About 2.5 billion years ago, free oxygen, or O2, first started to accumulate to meaningful levels in Earth's atmosphere, setting the stage for the rise of complex life on our evolving planet.
Earth Sciences
Jun 12, 2024
1
189
It is rather difficult to imagine, but approximately 635 million years ago, ice may have covered a vast portion of our planet in an event called "Snowball Earth." According to the Snowball Earth hypothesis, the massive ice ...
Earth Sciences
Feb 28, 2013
18
0
Cyanobacteria are a key species in Earth's history, as they introduced atmospheric oxygen for the first time. The analysis of their evolution therefore provides important insights into the formation of modern aerobic ecosystems. ...
Evolution
Oct 27, 2023
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162
Scientists recreated deep sea conditions from the last ice age and found that the tropical Pacific contained more carbon and less oxygen during that period than previously thought.
Earth Sciences
Oct 18, 2018
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58
The "Great Oxygenation Event" (GOE), the process whereby the Earth's atmosphere was continuously enriched with oxygen, a waste product of photosynthesis, began ~2.43 billion years ago. The source, according to science, was ...
Evolution
Apr 19, 2021
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1537
Astronomers using W. M. Keck Observatory on Maunakea in Hawaiʻi have discovered that aurorae at visible wavelengths appear on all 4 major moons of Jupiter: Io, Europa, Ganymede, and Callisto.
Astronomy
Feb 16, 2023
0
264
In the quest to understand the potential for life beyond Earth, researchers are widening their search to encompass not only biological markers, but also technological ones. While astrobiologists have long recognized the importance ...
Astrobiology
Jan 2, 2024
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119
(Phys.org) —With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil fuel energy has never ...
Materials Science
Jun 10, 2013
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0
(PhysOrg.com) -- A faint, infrared glow above the winter poles of Mars is giving new insights into seasonal changes in the planet's atmospheric circulation. The tell-tale night emission was first detected in 2004 in observations ...
Space Exploration
Apr 4, 2012
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